Робочий аркуш «Хімія для вступних іспитів на медсестринство» з відповідями

What is a horizontal row of the periodic table called?

1. AA family
2. BA period
3. CA group
4. DA block

Between which kinds of elements do covalent bonds usually form?

1. AA metal and a noble gas
2. BTwo group 1 metals
3. CA metal and a nonmetal
4. DTwo nonmetals

Which property is typical of bases?

1. AThey turn blue litmus red
2. BThey feel slippery
3. CThey taste sour
4. DThey have a pH below 7

Which coefficients balance __Na + __Cl₂ → __NaCl?

1. A1, 2, 1
2. B2, 1, 2
3. C2, 2, 1
4. D1, 1, 1

Why does water boil at a lower temperature at the top of a high mountain?

1. AThere is less oxygen dissolved in the water up there
2. BThe air pressure is lower, so less vapour pressure is needed to boil
3. CThe air is colder, so the water loses heat and boils sooner
4. DGravity is weaker, so the molecules escape more easily

At STP (0 °C and 1 atm), what volume does 1 mole of an ideal gas occupy?

1. A6,02 L
2. B22,4 L
3. C273 L
4. D1,0 L

Why does food cook faster in a pressure cooker?

1. APressure itself breaks down the food, regardless of temperature
2. BSteam is trapped, so the water boils at a lower temperature
3. CThe higher pressure lowers the boiling point
4. DThe higher pressure raises the boiling point, so the water is hotter

What is (8 × 10⁶) ÷ (2 × 10⁻²)?

1. A4 × 10⁴
2. B16 × 10⁴
3. C4 × 10⁻¹²
4. D4 × 10⁸